Live Nitrifying Bacteria 250ml

100% useful bacteria for your fresh water aquarium.

One & Only enables the introduction of 30% of the population planned for your fresh water aquarium in only 24 hours. One & Only is very effective after changing the water or after cleaning the filter.

One & Only is composed solely of fresh water nitrifying bacteria selected for their ability to create an optimal biological filter in your aquarium. It is not necessary to keep them in the refrigerator and there is no danger of overdosing.

Instructions :

• Shake well before use.
• 30 ml per 100 litres of aquarium water.
• For a new aquarium: use First Defense 30 minutes before introducing 30 ml of One & Only per 100 litres of water.
• Use-by Date: 1 year, even after opening.